Polishing-machine.



PATENTED AUG. 30, 1904.

W. S. BOWER. POLISHING MACHINE.

APPLICATION IILED NOV. 2a, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

No. 768,975. PATENTED AUG. 80, 1904.

W. S. BOWER. I

POLISHING MACHINE.

APPLICATION FILED NOV. 23, 1903.

N0 MODEL 2 SHEBTSSHEET 2.

fVVenCor Lye/is Q5. Java/er amt Patented August 30, 1904:.

PATENT OFFICE.

WELLS S. BOWER, OF HILLSDALE, MICHIGAN.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 768,975, dated August30, 1904.

Application filed November 23,1903. Serial No- 182,299. (No model.)

T 0 all 1072,07 it may concern.-

Be it known that I, WnLLs S. BOWER, a citizen of the United States,residing at Hillsdale,

The invention relates generally to polish-, ing-machines, and hasparticular reference to a machine of this character adapted forfinishing wheel rims or fellies.

The invention consists in the novel con struction of the machine and inthe peculiar arrangement and combination of its various parts, as willbe more fully hereinafter set forth and illustrated.

In the drawings, Figure l is a plan view of a machine embodying myinvention. Fig. 2 is a longitudinal section on line :22 w of Fig. 1.Fig. 3 is a detached perspective view of the presser mechanism. Fig. 4is an end elevation of the machine; and Fig. 5 is a view, partly insection, of a portion of the pressure mechanism.

In the drawings thus briefly described, A represents a suitable frame,preferably rectangular in configuration, which supports the other partsof the mechanism. Journaled in the rear portion of this frame is thesandcylinder B, its shaft, as shown, carrying at opposite ends thedrive-pulley C and the fixed and loose pulleys D and E.

F represents a transverse shaft journaled in the front part of theframe, carrying a pulley F, belted to the pulley C, as shown, and inproximity to its opposite end a bevel gear-wheel G.

H is a bracket having a hearing at its extremity, in which is journaledashaft I, provided with the bevel-gears J and K, the latter meshing withthe bevel-gear G, as inclicated in Figs. 1 and 2.

L represents a drive-shaft journaled in the extreme front portion of theframe, carrying thereon bevel-gears M and O, the latter meshing with thegear J.

J ournaled centrally within the framework described is a longitudinalshaft P, carrying. the bevel-gear Q, meshing with the gear M,

and a gear-wheel R, arranged centrally of and in proximity to thesand-cylinder.

Upon opposite sides of the shaft P and journaled in a cross-bar S of theframe are stub-shafts T and U, carrying, respectively, gear-wheels V andW, which mesh with the central gear R. The stub-shafts described are ofconsiderable diameter at their free ends and form the feed-rolls V and Wfor the felly.

Arranged beneath the gear mechanism on a suitable bracket X is anangle-shaped slide Y, the vertical portion Z of which projects upwardlyin proximity to the sand-cylinder. A represents a pin on the horizontalmember of the slide, and B is a spring interposed between the pin andthe frame, acting normally to force the slide toward the sand-cylinder.

In the operation of the machine power is applied to the fixed pulley D,which causes the sand-cylinder to rotate and the gear-wheel R andfeed-rolls to operate. One end of the felly C to be sanded is theninserted between a pair of suitable transverse guides C sequently a muchsmoother surface is pro.

duced than where a lengthwise feed is employed.

The felly while being fed across the sandingroll is held in operativerelation therewith by the springpressed slide described and aspring-pressed member D, preferably in the form of a wheel or roller,which normally engages the concave face of the felly.

The roller or wheel referred to forms a part of a presser mechanismadapted not only to hold the rim or felly down upon the feed-rolls, butalso to guide the felly toward or parallel with the sand-cylinder,according to whether considerable pressure against the sand-roller or aslight pressure is desired.

In construction the presser mechanism comprises two pivoted members Eand F arranged, as shown in Fig. 3, upon an auxiliary frame F, supportedwithin the main frame. The member E is mounted upon the rod E forrocking movement, and the rod in turn is journaled at one end within abearing a and at its opposite end in a threaded bearing 5, this end ofthe rod being threaded, as at 0, to engage the bearing.

1 represents an adjustable link forming a pivotal connection between themeeting portions of the pivoted members, and G is a journal-box mountedupon the transverse portion of the pivoted member E, in which isjournalcd the shaft H of the presser-roller.

The journal-box G described is slotted, as at (Z and a, and isadjustably secured to the member E by bolts f, so that it may be turnedor adjusted in a horizonial plane, and with it the presser-roller, so asto bring the latter into angular relation or parallelism with thesand-cylinder.

J is a weighted arm secured to the member F which serves to keep thepresser roll tightly in contact with the inner surface of thewheel-felly, and K is a spring for the free end of this arm, serving tosteady it and prevent it from jumping during the operation of sanding.

To adjust the mechanism described for different widths of fellies sothat the pressureroll will travel in the center of the felly, it is onlynecessary to apply a wrench or other suitable tool to the squared end aof the rod E the rotation of the rod throwing the wheel forward orbackward the desired distance.

In cases where pressure between the sandcylinder and stock is requiredin excess of that afforded by the spring-pressed slide the journal-boxis so adjusted as to throw the presserroll in angular relation to thecylinder, which causes the felly to travel toward and press against thesanding-surface, giving the additional pressure desired, the degree ofangular adjustment determining the amount of addi tional frictionalcontact.

IV hat I claim as my invention is 1. In a polishing-machine, thecombination of a rotary polishing-0ylinder, and mechanism operable uponthe movement of the cylinder, for automatically feeding stock to thecylinder in a direction transverse to its rotation, said mechanism beingarranged in front of, and intermediate the sides of, the cylinder.

2. In a polishing-machine, the combination with a rotatablepolishing-cylinder, of feedrolls spaced from one another, arrangedintermediate the sides of the cylinder, and mounted for rotary movementin a direction transverse to the rotation of the cylinder, and

means operable by the movement of the cylinder for simultaneouslydriving the cylinder and rolls.

3. In a polishing-machine, the combination with a polishing-cylinder, ofmeans for driving the same and mechanism associated with said lastmentioned means for feeding the stock in a direction transverse to therotation of the cylinder,- and spring-actuated means for automaticallyholding the work during its transverse travel against the periphery ofthe cylinder.

4. In a polishing-machine, the combination with a rotarypolishing-cjvlinder, of mechanism operable upon the movement of thecylinder for feeding stock thereto in a direction transverse to itsrotation, and automaticallyadjustable means for holding the stock infrictional engagement with the feed mechanism.

5. In a polishing-machine, the combination with a rotarypolishing-cylinder, of feed-rolls adjacent to the cylinder and adaptedto revolve in a direction substantially at right angles to the directionof rotation of the cylinder, a spring-actuated member for holding thework to the cylinder, and a spring-pressed rotary member for holding thework on the rolls.

6. In a polishing-machine, the combination with a rotarypolishing-cylinder, of mechanism for feeding stock thereto, andangularlyadjustable means for holding the stock in frictional engagementwith the feed mechanism.

7. In a polishing-machine, the combination with arotarypolishing-cylinder, of two spaced feed-rolls adjacent to the cylinderand adapted to revolve in a direction substantially at right angles tothe direction of rotation of the c'ylinder, a spring-actuated member forholding the Work to the cylinder, and spring-actuated means for holdingthe work on the rolls.

8. In a polishing-machine, the combination with a rotarypolishing-cylinder, of feed mechanism therefor operating to feed stockto said cylinder crosswise of its surface, and means adjustabletransversely relative to the axis of rotation of the cylinder forholding the stock in frictional engagement with the feed mechanism.

In testimony whereof I aflix my signature in presence of two witnesses.

WELLS S. BOVVER.

Witnesses:

F. WV. THOMPSON, E. M. LASH.

